Configure error in GPGME

[Robert J. Hansen]

On OS X 10.7.4 with the latest XCode bundle and GnuPG 2.0.17 provided
via GPGtools, GPGME seems to have a problem with its configure script.
I've excerpted part of it here, and the offending lines noted:

=====
     checking for setlocale... yes
     checking for gpg-error-config... /usr/local/MacGPG2/bin/gpg-error-
         config
     checking for GPG Error - version >= 1.8... yes (1.9)
     checking for libassuan-config... /usr/local/MacGPG2/bin/libassuan-
         config
     checking for LIBASSUAN - version >= 2.0.2... no
     checking for gpg... /usr/local/bin/gpg
==>  checking for GPG >= 1.4.0... ./configure: line 18679: test: 2) 2:
==>      integer expression expected
==>  ./configure: line 18682: test: 2) 2: integer expression expected
==>  no
==>  configure: WARNING: GPG must be at least version 1.4.0
     checking for gpgsm... /usr/local/MacGPG2/bin/gpgsm
==>  checking for GPGSM >= 1.9.6... ./configure: line 18850: test: 2)
==>      2: integer expression expected
==>  ./configure: line 18853: test: 2) 2: integer expression expected
==>  no
==>  configure: WARNING: GPGSM must be at least version 1.9.6
     checking for gpgconf... /usr/local/MacGPG2/bin/gpgconf
==>  checking for GPGCONF >= 2.0.4... ./configure: line 19020: test: 2)
==>   2: integer expression expected
==>  ./configure: line 19023: test: 2) 2: integer expression expected
==>  no
     configure: WARNING: GPGCONF must be at least version 2.0.4
     checking for g13... no
     configure: WARNING:
     ***
     *** Could not find g13, install g13 or use --with-g13=PATH to
     *** enable it
     ***
     checking for funopen... yes
=====